375一298
解:375-298等于( 77 )
∵已知需求出375-298等于多少
X - Y = Z
∴375 - 298
= (400 - 25)- (300 - 2)
= 400 - 25 - 300 + 2
= (400 - 300)+(-25 + 2)
= 100 - 23
= 77
答:375-298等于77
∵已知需求出375-298等于多少
X - Y = Z
∴375 - 298
= (400 - 25)- (300 - 2)
= 400 - 25 - 300 + 2
= (400 - 300)+(-25 + 2)
= 100 - 23
= 77
答:375-298等于77
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第1个回答 2020-03-10
脱式计算
375-298
=375-300+2
=75+2
=77
375-298
=375-300+2
=75+2
=77